vi /usr/share/doc/kernel-doc-2.6.18/Documentation/networking/bonding.txt

The Linux bonding driver provides a method for aggregating multiple network interfaces into a single logical “bonded” interface. The behavior of the bonded interfaces depends upon the mode; generally speaking, modes provide either hot standby or load balancing services. Additionally, link integrity monitoring may be performed.

We have multiple bonding implementation using two or three ethernet card but with single bonding interface and it can be found on internet. Using multiple bonding interfaces are rear and all of them using different method to implement it because the documentation method isn’t working now. The document says to load multiple bonding modules for multiple bonding interfaces but using -o option within options in /etc/modprobe.conf and its not support by RHEL 5 and later releases. Therefore we will use BONDING_OPTS options in network scripts of bonding interfaces.

As we are implementing one of the biggest Oracle RAC implementation, we need load balancing with fault tolerance of network to access the storage without any point of failure. Therefore we are using bonding mode 2 (balance-xor), This mode provides load balancing and fault tolerance.

All of our servers are with 4 ethernet cards and we connect 2 ethernet interfaces (eth0 and eth1) with switch1 and 2 interfaces (eth2 and eth3) with switch2 to have multiple paths. We will create two bonding interfaces bond0 (eth0 and eth2) and bond1 (eth1, eth3). So if eth0 (from switch1) fails the bond will continue to use eth2 (from switch2) and load balance between two switches.

1) Load Bonding Driver/Module

We need to edit /etc/modprobe.conf to load bonding module into linux.

vi /etc/modprobe.conf

add following lines

alias bond0 bonding
alias bond1 bonding

2) Configure ethernet interfaces.

As we discussed we have 4 ethernet interfaces, so we need to put right configuration to team multiple cards in it to work as bond. You need to edit/add following as it is

vi /etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0
USERCTL=no
ONBOOT=yes
MASTER=bond0
SLAVE=yes
BOOTPROTO=none

vi /etc/sysconfig/network-scripts/ifcfg-eth1

DEVICE=eth1
USERCTL=no
ONBOOT=yes
MASTER=bond1
SLAVE=yes
BOOTPROTO=none

vi /etc/sysconfig/network-scripts/ifcfg-eth2

DEVICE=eth2
USERCTL=no
ONBOOT=yes
MASTER=bond0
SLAVE=yes
BOOTPROTO=none

vi /etc/sysconfig/network-scripts/ifcfg-eth3

DEVICE=eth3
USERCTL=no
ONBOOT=yes
MASTER=bond1
SLAVE=yes
BOOTPROTO=none

3) Configure bonding

Create bond0 and bond1 scripts under /etc/sysconfig/network-scripts same as ethernet interfaces.

touch /etc/sysconfig/network-scripts/ifcfg-bond0
touch /etc/sysconfig/network-scripts/ifcfg-bond1

vi /etc/sysconfig/network-scripts/ifcfg-bond0

DEVICE=bond0
BOOTPROTO=none
ONBOOT=yes
USERCTL=no
BONDING_OPTS=”max_bonds=2 miimon=100 mode=2 primary=eth0″
NETMASK=255.255.255.0
IPADDR=192.168.0.1

Change IPADDR and NETMASK as per your environment.

vi /etc/sysconfig/network-scripts/ifcfg-bond1

DEVICE=bond1
BOOTPROTO=none
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
BONDING_OPTS=”max_bonds=2 miimon=100 mode=2 primary=eth1″
NETMASK=255.255.255.0
IPADDR=192.168.0.2

Change IPADDR and NETMASK as per your environment. where

max_bonds = Specifies the number of bonding devices to create for this instance of the bonding driver

miimon = Specifies the MII link monitoring frequency in milliseconds. This determines how often the link state of each slave is inspected for link failures.

mode = Specifies one of the bonding policies, and we are using 2 as defined above

primary = A string (eth0, eth2, etc) specifying which slave is the primary device.  The specified device will always be the active slave while it is available.  Only when the primary is off-line will alternate devices be used

4) Test

Restart network init script, it will first load bonding module and then setup bond0 and bond1 interfaces.

/etc/init.d/network restart

/etc/init.d/network restart
Shutting down interface bond0:                             [  OK  ]
Shutting down interface bond1:                             [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface bond0:                               [  OK  ]
Bringing up interface bond1:                                [  OK  ]

Check interfaces

ifconfig

bond0     Link encap:Ethernet  HWaddr 00:24:E8:4A:F8:77
inet addr:192.168.0.1  Bcast:192.168.0.255  Mask:255.255.255.0
UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
RX packets:27908 errors:0 dropped:0 overruns:0 frame:0
TX packets:18422 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:23044634 (21.9 MiB)  TX bytes:2218142 (2.1 MiB)

bond1     Link encap:Ethernet  HWaddr 00:24:E8:4A:F8:79
inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0
UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
RX packets:70 errors:0 dropped:0 overruns:0 frame:0
TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:15611 (15.2 KiB)  TX bytes:3524 (3.4 KiB)

eth0      Link encap:Ethernet  HWaddr 00:24:E8:4A:F8:77
UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
RX packets:27474 errors:0 dropped:0 overruns:0 frame:0
TX packets:18422 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:23013444 (21.9 MiB)  TX bytes:2218142 (2.1 MiB)
Interrupt:106 Memory:d2000000-d2012800

eth1      Link encap:Ethernet  HWaddr 00:24:E8:4A:F8:79
UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
RX packets:67 errors:0 dropped:0 overruns:0 frame:0
TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:15419 (15.0 KiB)  TX bytes:3524 (3.4 KiB)
Interrupt:114 Memory:d4000000-d4012800

eth2      Link encap:Ethernet  HWaddr 00:24:E8:4A:F8:77
UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
RX packets:434 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:31190 (30.4 KiB)  TX bytes:0 (0.0 b)
Interrupt:122 Memory:d6000000-d6012800

eth3      Link encap:Ethernet  HWaddr 00:24:E8:4A:F8:79
UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
RX packets:3 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:192 (192.0 b)  TX bytes:0 (0.0 b)
Interrupt:130 Memory:d8000000-d8012800

Verify bonding actually works

cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v3.2.4 (January 28, 2008)

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: eth0
Currently Active Slave: eth0
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

Slave Interface: eth0
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:24:e8:4a:f5:cc

Slave Interface: eth2
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:24:e8:4a:f5:d0

cat /proc/net/bonding/bond1
Ethernet Channel Bonding Driver: v3.2.4 (January 28, 2008)

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: eth1
Currently Active Slave: eth1
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0

Slave Interface: eth1
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:24:e8:4a:f5:ce

Slave Interface: eth3
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:24:e8:4a:f5:d2

If you have any question please use comments.

1) Install memcached.

Enable rpmforge respository to install latest memcached rpm using yum.

For i386 / i686

rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm

For x86_64

rpm -Uhv http://apt.sw.be/redhat/el5/en/x86_64/rpmforge/RPMS//rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm

Use yum to install memcached

yum -y install memcached

As soon as memcached installation completed, edit options for memcached in /etc/sysconfig/memcached to meet your need.

vi /etc/sysconfig/memcached

PORT=”11211″                #define on which port to urn
USER=”nobody”           #same as apache user
MAXCONN=”1024″     #maximum number of connections allowed
CACHESIZE=”64″         #memory used for caching
OPTIONS=”"                   #use for any custom options

Save the file. All options can be seen by using following command

memcached -h

Start memcached

/etc/init.d/memcached start
Starting Distributed memory caching (memcached):           [  OK  ]

to check the running status of memcached

/etc/init.d/memcached status
memcached (pid 6475) is running…

and

netstat -anp | grep 11211
tcp  0  0 :::11211    :::*  LISTEN      6475/memcached
udp 0  0 0.0.0.0:11211  0.0.0.0:* 6475/memcached

2) Install PHP Extension.

Download and install latest stable memcache version from PECL.

cd /usr/src
wget http://pecl.php.net/get/memcache-2.2.5.tgz
tar zxvf memcache-2.2.5.tgz
cd memcache-2.2.5
phpize
./configure
make
make install

memcache.so will be install in php modules directory, now enable memcache.so extension in php.ini

To find out your php.ini location, execute following command

php -i | grep php.ini
Configuration File (php.ini) Path => /usr/local/lib
Loaded Configuration File => /usr/local/lib/php.ini

vi /usr/local/lib/php.ini

extension = “memcache.so”

save the file and restart httpd server.

/etc/init.d/httpd restart

To check is memcache extension loaded in php, execute following command.

php -i | grep memcache
memcache
memcache support => enabled
memcache.allow_failover => 1 => 1
memcache.chunk_size => 8192 => 8192
memcache.default_port => 11211 => 11211
memcache.default_timeout_ms => 1000 => 1000
memcache.hash_function => crc32 => crc32
memcache.hash_strategy => standard => standard
memcache.max_failover_attempts => 20 => 20
Registered save handlers => files user sqlite memcache
PWD => /usr/src/memcache-2.2.5
_SERVER["PWD"] => /usr/src/memcache-2.2.5
_ENV["PWD"] => /usr/src/memcache-2.2.5

This information can also be seen using phpinfo().

If you have question please comment.

1) Download and Install Java

RED5 server depends on Java. CentOS 5.3 comes with OpenJDK 1.6 and install it using yum.

yum -y install java-1.6.0-openjdk java-1.6.0-openjdk-devel

2) Download and Install Ant (Apache Project)

Ant will need to compile RED5 server code. Ant comes in binary form, so just download and install it in /usr/local directory.

cd /usr/src
wget http://mirrors.kahuki.com/apache/ant/binaries/apache-ant-1.8.0-bin.tar.bz2
tar jxvf apache-ant-1.8.0-bin.tar.bz2
mv apache-ant-1.8.0 /usr/local/ant

3) Export Variables for Ant and Java

export ANT_HOME=/usr/local/ant
export JAVA_HOME=/usr/lib/jvm/java
export PATH=$PATH:/usr/local/ant/bin
export CLASSPATH=.:$JAVA_HOME/lib/classes.zip

Also export these variables in /etc/bashrc to become available for every user login or for any terminal opens.

echo ‘export ANT_HOME=/usr/local/ant’ >> /etc/bashrc
echo ‘export JAVA_HOME=/usr/lib/jvm/java’ >> /etc/bashrc
echo ‘export PATH=$PATH:/usr/local/ant/bin’ >> /etc/bashrc
echo ‘export CLASSPATH=.:$JAVA_HOME/lib/classes.zip’ >> /etc/bashrc

4) Download and Install RED5 Server

Here the latest version available for RED5 is 0.7 on site but download from google code using svn as the tarball of 0.7 on site is missing some of the files.

cd /usr/src
svn checkout http://red5.googlecode.com/svn/java/server/trunk/ red5
mv red5 /usr/local/
cd /usr/local/red5
ant prepare
ant dist

you will see a ton of lines, but you should get at last

BUILD SUCCESSFUL

that’s mean its install and now copy the conf directory from dist/ and test the red5 installation.

cp -r dist/conf .
./red5.sh

If it shows Installer service created in the last then everything is fine here, press ctrl+c and move to next step to create init script.

5) Init Script

Now we will create init script for red5 to start, stop and restart easily.

vi /etc/init.d/red5

download http://www.sohailriaz.com/downloads/red5.txt and copy / paste code in it. The init script code also be viewed below.

#!/bin/sh
# For RedHat and cousins:
# chkconfig: 2345 85 85
# description: Red5 flash streaming server
# processname: red5

PROG=red5
RED5_HOME=/usr/local/red5
DAEMON=$RED5_HOME/$PROG.sh
PIDFILE=/var/run/$PROG.pid

# Source function library
. /etc/rc.d/init.d/functions

[ -r /etc/sysconfig/red5 ] && . /etc/sysconfig/red5

RETVAL=0

case “$1″ in
start)
echo -n $”Starting $PROG: ”
cd $RED5_HOME
$DAEMON >/dev/null 2>/dev/null &
RETVAL=$?
if [ $RETVAL -eq 0 ]; then
echo $! > $PIDFILE
touch /var/lock/subsys/$PROG

fi
[ $RETVAL -eq 0 ] && success $”$PROG startup” || failure $”$PROG startup”
echo
;;
stop)
echo -n $”Shutting down $PROG: ”
killproc -p $PIDFILE
RETVAL=$?
echo
[ $RETVAL -eq 0 ] && rm -f /var/lock/subsys/$PROG
;;
restart)
$0 stop
$0 start
;;
status)
status $PROG -p $PIDFILE
RETVAL=$?
;;
*)
echo $”Usage: $0 {start|stop|restart|status}”
RETVAL=1
esac

exit $RETVAL

Now start the service

/etc/init.d/red5 start

check status

/etc/init.d/red5 status
red5 (pid  XXXXX) is running…

again you can do stop, restart.

6) Test

Now test the RED5 installation by opening following URL in browser

http://yourip:5080/

you will see red5 page like this

and demos can be find here.

http://yourip:5080/demos/

You can use simple port tester tool that determines which ports the Flash Player is able to connect through to the Red5 server. Put your server address or IP in HOST when using port tester. You should get SUCCESS on RTMP or port 1935. If not please check your firewall.

http://yourip:5080/demos/port_tester.html

7) ISSUE

When you run ./red5.sh, it will show you Installer service created. Thats mean everything runs fine and red5 server is up. But if you went to port_tester.swf using demos above or your application shows connections FAILS, this is an issue of RTMPT and RTMPTS. You can see it by running

/usr/local/red5/red5.sh

output trancated

[INFO] [main] org.red5.server.tomcat.TomcatLoader – RTMPT server bean was not found
[INFO] [main] org.red5.server.tomcat.TomcatLoader – RTMPS server bean was not found

output truncated

If you see this you have to uncomment the RTMPT and RTMPTS TomcatLoader in/usr/local/red5/conf/red5-core.xml

vi /usr/local/red5/conf/red5-core.xml

Search for a lines

<!– RTMPT –>
<!–
<bean id=”rtmpt.server” class=”org.red5.server.net.rtmpt.TomcatRTMPTLoader” init-method=”init” lazy-init=”true”>

Remove the <!– from start of <bean and –> from end of </bean>

Same goes for RTMPS

<!– RTMPS –>
<!–
<bean id=”rtmps.server” class=”org.red5.server.net.rtmps.TomcatRTMPSLoader” init-method=”init” lazy-init=”true”>

Remove the <!– from start of <bean and –> from end of </bean>

Restart the red5 services and connection fails problem will be fixed.

If you any question please use comments.

1 Setting Up RPMForge Repository

RPMForge repository (http://dag.wieers.com) is the biggest rpm respository for RHEL, CentOS for all versions. To enable RPMForge respository run following command. The following command directly install rpm from http://dag.wieers.com site.

rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm

This rpm will add necessary files in our repository configuration and can be viewed at /etc/yum.repos.d/rpmforge.repo

2 Install MyTOP

Use yum to install mytop on your machine

yum -y install mytop

It will install mytop with all necessary pre-requisite to run mytop.

3 Running MyTOP

To run use

mytop

if you have restricted access using password then

mytop -u root -p <password> -h localhost

NOTE: You may get following error in CentOS 5.3
Error in option spec: “long|!”

To fix this do following.

chmod 755 /usr/bin/mytop
vi /usr/bin/mytop

Search for the line

“long|!”              => \$config{long_nums},

Change it to by commenting using #

#”long|!”              => \$config{long_nums},

Now run the command again and it will run fine and you can see mytop giving all the information about you mysql server.

mytop

1) Grep MAC Addresses

Let suppose we have 10 machines with IPs range 192.168.0.1 – 192.168.0.10, you have to get mac address for them using following command.

Besure your machines are up and pingable, else you will get empty lines and you have to remove them manually.

for i in `seq 1 10`; do ping -c 1 192.168.0.$i; arp -n 192.168.0.$i | grep -v Address | grep -v incomplete | awk ‘{print $1 ” “  $3}’ >> ip-mac.txt; done

This command will get required mac address with IP in a file named ip-mac.txt

cat ip-mac.txt
192.168.0.1 00:1D:09:6B:3C:28
192.168.0.2 00:1D:09:6A:EA:02
192.168.0.3 00:1D:09:71:2C:34
192.168.0.4 00:1D:09:6A:CB:85
192.168.0.5 00:1D:09:6A:C3:15
192.168.0.6 00:1D:09:6A:CA:8B
192.168.0.7 00:1D:09:6A:CB:DA
192.168.0.8 00:1D:09:6A:CC:34
192.168.0.9 00:1D:09:6B:11:76
192.168.0.10 00:1D:09:6B:36:6F

2) Create ACL For SQUID.

I will create a small bash script to easy my work.

To get acl for mac

i=1
cat ip-mac.txt | while read a; do b=`echo $a | cut -f 2 -d ” “`; echo “acl mac$i arp $b” >> squid-mac-filter.txt; i=`expr $i + 1`; done

cat squid-mac-filter.txt
acl mac1 arp 00:1D:09:6B:3C:28
acl mac2 arp 00:1D:09:6A:EA:02
acl mac3 arp 00:1D:09:71:2C:34
acl mac4 arp 00:1D:09:6A:CB:85
acl mac5 arp 00:1D:09:6A:C3:15
acl mac6 arp 00:1D:09:6A:CA:8B
acl mac7 arp 00:1D:09:6A:CB:DA
acl mac8 arp 00:1D:09:6A:CC:34
acl mac9 arp 00:1D:09:6B:11:76
acl mac10 arp 00:1D:09:6B:36:6F

To get acl for ip

i=1
cat ip-mac.txt | while read a; do b=`echo $a | cut -f 1 -d ” “`; echo “acl ip$i src $b” >> squid-ip-filter.txt; i=`expr $i + 1`; done

cat squid-ip-filter.txt
acl ip1 arp 192.168.0.1
acl ip2 arp 192.168.0.2
acl ip3 arp 192.168.0.3
acl ip4 arp 192.168.0.4
acl ip5 arp 192.168.0.5
acl ip6 arp 192.168.0.6
acl ip7 arp 192.168.0.7
acl ip8 arp 192.168.0.8
acl ip9 arp 192.168.0.9
acl ip10 arp 192.168.0.10

To generate http_access allow lines, you have to get the max number of your list of IP’s and MAC’s. Here i have is 10, sure both will be the same

for i in `seq 1 10`; do echo “http_access allow mac$i ip$i” >> http-access-squid.txt; done

cat http-access-squid.txt
http_access allow mac1 ip1
http_access allow mac2 ip2
http_access allow mac3 ip3
http_access allow mac4 ip4
http_access allow mac5 ip5
http_access allow mac6 ip6
http_access allow mac7 ip7
http_access allow mac8 ip8
http_access allow mac9 ip9
http_access allow mac10 ip10

Now concatinate three files i.e squid-ip-filter.txt, squid-mac-filter.txt and http_access_squid.txt

cat squid-mac-filter.txt squid-ip-filter.txt http-access-squid.txt >> acl-final.txt

and copy from acl-final.txt to paste on appropriate location in squid.conf, dont forget to put http_access deny all on the last .

To get more help on it please use comments.

1) Pre-requisite

First of all you should have install rpm-devel and rpm-build rpms from your distro repository. Confirm it using following command

rpm -qa | grep rpm

rpm-4.3.3-26
rpm-devel-4.3.3-26
rpm-python-4.3.3-26
redhat-rpm-config-8.0.32.1-4
rpmdb-CentOS-4.7-0.20080805
rpm-libs-4.3.3-26
rpm-build-4.3.3-26

If you see required rpms in the list then you are good to go with source rpm compilation, else you have to install required rpms.

yum -y install rpm-build rpm-devel

or

rpm -ivh /path/rpm-build* /path/rpm-devel*

The rpm-build and rpm-devel also build following directories for source rpm compilations.

/usr/src/redhat/{BUILD,RPMS,SOURCES,SPECS,SRPMS}

2) Compiling the source

Get your source rpm which you need to compile.  Here i will get the ffmpeg source rpm from http://dag.wieers.com/rpm/packages/ffmpeg/ because i need to add libamr-nb and libamr-wb support for converting 3gp clips.

wget http://dag.wieers.com/rpm/packages/ffmpeg/ffmpeg-0.4.9-0.9.20070530.rf.src.rpm

rpm -ivh ffmpeg-0.4.9-0.9.20070530.rf.src.rpm

It will install source files tar.gz, patch files in

/usr/src/redhat/SOURCES

and spec file in

/usr/src/redhat/SPECS

I have to add –with-libamrnb and –with-libamrwb in ./configure command specified in ffmpeg.spec and you can edit whatever you are going to change/edit.

After editing now compile the sources and generate rpm using spec file.

cd /usr/src/redhat/SPECS

rpmbuild -bb ffmpeg.spec

The above command will apply patches if any and compile the source and generate rpm under /usr/src/redhat/RPMS sub-directories regarding to your architecture i.e

/usr/src/redhat/RPMS/i386 for i386,i686

/usr/src/redhat/RPMS/x86_64 for x86_64 etc.

While compiling you will see the verbose output of compilation and you should see clean compilation with notifying of generating rpm at the end.

1 Setting Up RPMForge Respository.

RPMForge repository (http://dag.wieers.com) is the biggest rpm respository for RHEL, CentOS for all versions. To enable RPMForge respository run following command to install all necessary files for getting RPMForge repository. The following command directly install rpm from http://da.wieers.com site.

rpm -Uhv http://apt.sw.be/redhat/el5/en/i386/rpmforge/RPMS/rpmforge-release-0.3.6-1.el5.rf.i386.rpm

This rpm will add necessary files in our repository configuration and can be viewed at /etc/yum.repos.d/rpmforge.repo

2 Install ffmpeg, mplayer, mencoder with all supported modules.

Now we have rpmforge repository, so we will use yum to install ffmpeg, mplayer, mencoder as well as all dependent software.

yum -y install ffmpeg ffmpeg-devel mplayer mencoder flvtool2

This command will some time to download and install all packages depends on your internet speed.

3 Install FFMPEG-PHP

ffmpeg-php is an extension for PHP that adds an easy to use, object-oriented API for accessing and retrieving information from video and audio files. ffmpeg-devel and php-devel is needed to compile ffmpeg-php from source code. Use following steps to install ffmpeg-php

cd /usr/src
wget http://garr.dl.sourceforge.net/sourceforge/ffmpeg-php/ffmpeg-php-0.6.0.tbz2
tar jxvf ffmpeg-php-0.6.0.tbz2
cd ffmpeg-php-0.6.0
phpize
./configure
make
make install

It will copy the ffmpeg.so module in php default module location. Now you have to edit php.ini file to enable ffmpeg-php support in it by using ffmpeg.so module.

vi /etc/php.ini

and append following line

extension=ffmpeg.so

Restart apache service to take effect of php.ini

/etc/init.d/httpd restart

Run following command to ffmpeg module listing in php.

php -m | grep ffmpeg

Have a nice streaming.

We consider here we have a domain sohailriaz.com with cpanel username sohailri

Please note on CPanel servers most of the work is done using cpanel username which then reflect setting on particular domains. If you have several domains / sub domains under one username, it will add domainkeys and SPF records for all domains / subdomains.

Execute the following command on your CPanel server using root.

1 DomainKeys

1.1 Add DomainKeys for single user

/usr/local/cpanel/bin/domain_keys_installer sohailri

where sohailri is a username

1.2 Add DomainKeys for all CPanel users.

If you wish to add DomainKeys for all Cpanel users on your server, execute following command.

ls /var/cpanel/users | while read a; do
/usr/local/cpanel/bin/domain_keys_installer $a
done

2 SPF (Sender Policy Framework)

2.1 Add SPF for single account.

/usr/local/cpanel/bin/spf_installer sohailri

2.2 Add SPF for all Cpanel accounts.

If you want to add SPF records for all cpanel accounts exist on your server then use the following command.

ls /var/cpanel/users | while read a; do
/usr/local/cpanel/bin/spf_installer $a
done

3 Enable DomainKeys and SPF for every new CPanel account.

If you want to add DomainKeys and SPF for every new account created on Cpanel, then do the following.

vi /scripts/postwwwacct

postwwwacct is a file which execute after wwwacct (used to create account), paste following lines in the file

#!/usr/bin/perl

my %OPTS = @ARGV;
$ENV{USER} = “$OPTS{‘user’}”;
system q(/usr/local/cpanel/bin/domain_keys_installer $USER);
system q(/usr/local/cpanel/bin/spf_installer $USER);

Happy Mailing

If you have any question / suggestion please comment.

which will be then install using /scripts/easyapache on command line or Apache Update using WHM on your choice whether to install it or not.

I wroted it in february and published on my site, but after few days CPanel Developer DAN contacted me to enhance with there requirements that it can be added to CPanel Custom Module Listing. I made several changes to first version as suggested by CPanel Developers and alhamdulillah succeeded in it and now its listing in CPanel Custom Module. You can install it by using following steps

1) Download

wget http://easyapache.cpanel.net/optmods/custom_opt_mod-mod_geoip.tar.gz

or

wget http://www.sohailriaz.com/downloads/custom_opt_mod-mod_geoip.tar.gz

2) Installation

tar -C /var/cpanel/easy/apache/custom_opt_mods  custom_opt_mod-mod_geoip.tar.gz

Thats it, now you can run

/scripts/easyapache

or

Login into WHM and go to EasyApache Update

It will show you the Mod_GeoIP included in it and you can install it by checking the box.

Normally we use NetCat to ssh outside using proxy server but if its not support proxy user / pass to authenticate by proxy server and then ssh outside. Here we will use a package called connect.c.

connect.c is the simple relaying command to make network connection via SOCKS and https proxy. It is mainly intended to be used as proxy command of OpenSSH. You can make SSH session beyond the firewall with this command.

This can be achieved by other methods too but this works for me.

1) Download connect.c software.

wget http://www.meadowy.org/~gotoh/ssh/connect.c

2) Compile connect.c Using GCC

gcc connect.c -o connect

and then copy to directory in your PATH i.e /usr/bin or /usr/local/bin

cp connect /usr/bin

3) Congiure ssh_config

append following line

ProxyCommand /usr/bin/connect -H proxy01.sohailriaz.com:8080 %h %p

4) Export Proxy User / Pass as variable

It is insecure but we have to used it. If your proxy doesnt use user/pass for authenticatio, you can skip this.

export HTTP_PROXY_USER=your_username
export HTTP_PROXY_PASSWORD=your_password

Thats it now you can ssh outside without any restriction